Turns out that Keifer Sutherland, the actor that plays fan-favorite protagonist Jack Bauer in the  hit Fox series 24, may be the 'most unprofessional dude in the world.' 

According to Freddie Prinze Jr., Sutherland almost made him want to quit showbiz all together, after guest starring alongside the 47-year-old star in 2010.

The Daily News reports that the 38-year-old found his acting experience on 24 to be terrible.  "I hated every moment of it,” he said.

So, think these allegations are true? 

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